Truenas Scale Build - Cannot set different output templates for different metadata files

[CenterfireXid]

Hello,

I am running MeTube as a chart on my TrueNAS system. It has been working great so far. Because it is a "chart" there is limited customizing available. For example, in order to make changes to the output settings or YTDL options, you can only make changes here:

Here is the output template I have been using:

%(uploader,creator)S - %(title)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d)S - [%(id)S].%(ext)s

This successfully outputs this filename "Dirty Civilian - Low-Vis Armor + Chest Rig Combo for Civilian Defense - 2024-09-21 - [TTsi4Kg6hkQ].mp4" for this Youtube video which is the behavior I want.

Recently, I have been embedding thumbnails in the video using this YTDL Option:

{"writeautomaticsub":true,"subtitleslangs":["en","-live_chat"],"writethumbnail":true,"updatetime":false,"postprocessors":[{"key":"Exec","exec_cmd":"chmod 0664","when":"after_move"},{"key":"FFmpegEmbedSubtitle","already_have_subtitle":false},{"key":"FFmpegMetadata","add_chapters":true},{"key":"EmbedThumbnail"}]}

This successfully downloads and embeds english subtitles as well as downloads and embeds the thumbnails. HOWEVER, I want to rename the thumbnail to either "poster.(ext)" or any filename with the keyword "poster" in it. After diving into the README.md I see that I should be using this output template:

-o "%(uploader,creator)S - %(title)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d)S - [%(id)S].%(ext)s" -o "thumbnail:poster%(ext)s"

However, because this is a TrueNAS chart, I can only input my Output Template in this box

I have tried many different permutations of the output to no avail. Here are what I have tried so far:

Test 1
"%(uploader,creator)S - %(title)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d)S - [%(id)S].%(ext)s" "thumbnail:poster
Attempt - rename thumbnail as "poster"
RESULT: Successful download, however name is garbled "_S5L0M~L.MP4"

Test 2
%(uploader,creator)S - %(title)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d)S - [%(id)S].%(ext)s thumbnail:poster
RESULT: Successful download, however name is garbled "DBFLJR~H.MP4"

Test 3
%(uploader,creator)S - %(title)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d)S - [%(id)S].%(ext)s "thumbnail:poster - %(uploader,creator)S - %(title)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d)S - [%(id)S].%(ext)s"
RESULT: Garbled name "D9NQLN~V.MP4"

Test 4
"%(uploader,creator)S - %(title)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d)S - [%(id)S].%(ext)s" "thumbnail:poster - %(uploader,creator)S - %(title)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d)S - [%(id)S].%(ext)s"
RESULT: Garbled name

Test 5
-o "%(uploader,creator)S - %(title)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d)S - [%(id)S].%(ext)s" -o "thumbnail:poster - %(uploader,creator)S - %(title)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d)S - [%(id)S].%(ext)s"
Fails Download

Test 6
"%(uploader,creator)S - %(title)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d)S - [%(id)S].%(ext)s" -o "thumbnail:poster - %(uploader,creator)S - %(title)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d)S - [%(id)S].%(ext)s"
Fails Download

Test 7
%(uploader,creator)S - %(title)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d)S - [%(id)S].%(ext)s -o "thumbnail:poster - %(uploader,creator)S - %(title)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d)S - [%(id)S].%(ext)s"
Downloads, but garbled name

I am guessing that the way this TrueNAS chart works is that the GUI has whatever you input within the "Output Template" Box

already with the "-o" which is why when trying to add additional output templates for the metadata, it spits out garbled filenames. scrolling down in the chart options, I found these boxes that you can add additional lines to:

I have tried messing with these boxes as well to no avail. Here is what I have tried:

Test 1
OUTPUT \\\ %(uploader,creator)S - %(title)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d)S.%(ext)s
Extra Args \\\ -o "thumbnail:poster - %(uploader,creator)S - %(title)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d)S - [%(id)S].%(ext)s"
RESULT: App not deploying

Test 2
OUTPUT \\\ %(uploader,creator)S - %(title)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d)S - [%(id)S].%(ext)s
Advanced>Command \\\ -o thumbnail:poster - %(uploader,creator)S - %(title)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d)S - [%(id)S].%(ext)s
RESULT: App not Deploying

Test 3
OUTPUT \\\ %(uploader,creator)S - %(title)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d)S.%(ext)s
Env Var \\\ -o \\\ thumbnail:poster - %(uploader,creator)S - %(title)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d)S - [%(id)S].%(ext)s
RESULT: Successful download, but thumbnail name is same as video file BUT NO YOUTUBE ID ---> Forgot to add that

Test 4
OUTPUT \\\ %(uploader,creator)S - %(title)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d)S.%(ext)s
Env Var \\\ -output \\\ "thumbnail:poster - %(uploader,creator)S - %(title)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d)S - [%(id)S].%(ext)s"
RESULT: Successful, BUT thumbnail name is same as video file

Please help me out as I am pulling my hair out trying to figure this out.

Note: I am trying to add "poster" within the filename of the thumbnail so that the embedded thumbnail/image stream has "poster" within it - this is so the media player I am using can properly recognize the embedded thumbnails as thumbnails and display them as poster/cover art.